Mining-shaft cage



(No Model.)

N. HALLER. MINING $HAFT GAGE- No. 516,350. Patented Mar. 13, 1894.

THE NATIONAL u'moanmme coMPAm'.

' elevation of the same.

NrTED STATES NIOKLAUS HALLER, OF PITTSBURG, PENNSYLVANIA.

MlNlNG-SHAFT CAGE.

SPECIFICATION forming part of Letters Patent No. 516,350, dated March 13, 1894. Application filed January 3, 1893. Serial No.45'7,160. (No model.)

To all whom it may concern:

Be it known that I, NIOKLAUS HALLER, a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Mining-Shaft Cages; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, fication.

My invention relates to an improved dumping device for mine hoists, and consists in certain details of construction and combination of parts as will be fully described hereinafter.

In the accompanying drawings, Figure 1 is a side elevation of my improved mine cage which is constructed in accordance with my invention, and showing the altered position of the same in dotted lines. Fig. 2 is a front Fig. 3 is a plan view of the frame showing the stationary apron.

To put my invention into practice I construct a frameet from structural iron or steel, and attach thereto at either side guide bars 20. These two guide bars 20, are each provided with two rollers 21 adapted to engage with a rail 3 attached to the guide posts 1 of the shaft at either side of the platform 4. Each of these rails 2 is bent forward at the front 3, and attached to the frame surrounding the shaft. Attached to the top of the frame 4 at the front and rear leaving an intermediate space are short sections of rails 11, to form a track, and placed between the two front sections is a stationary apron 22, which projects a short distance over the front edge of the frame for the purpose of overlapping the chute leading from the shaft, when the platform is in an inclined position for the purpose of dumping the car. Arranged beneath this platform 4 is another 7 capable of a limited vertical movement, and adapted to remain a short distance below the level of the platform 4 or at any point desired except when the same is at the bottom of the shaft, at which time the said platform is brought in contact with timbers 9 and held until the which form a part of this speci-' upper platform 4 settles down, and brings the rails of the one platform to the level of the other. This lower platform 7 operates vertically between guides 6 attached to the upper frame 4, and connected by cross bars 8 below. Attached to the top of the lower platform, and elevated slightly above the same by bearings 5 are short sections of rails 10, arranged to correspond in position to those 11, on the platform above. Arranged transversely across beneath the lower frame is a shaft 18, to which is attached the hoisting bail 16, and the ends of the said shaft fitted with shoes or rollers adapted to bear against the guide rails 2. The several portions of the apparatus are suitably braced by means of rods in a manner well known to the art. To automatically open the latch of the mine-car 12 while in the act of dumping the same, I arrange on one side of the bail a roller 15 placed in a bracket 23 and adapted to engage with a lever 14. pivoted at 13 to one of the guides 20 of the platform 4. This le ver remains beneath the latch of the end gate of the car 12 when-the car is in a horizontal position, but when the said car is in the act of being dumped the movement of the platform 4. moves the bent end 19 of the said lever through the bracket 23 and presses that end down, thereby elevating the end beneath the latch and disengaging the same to open the end gate.

In operation a loaded car is placed in the center of the platform or cage at the bottom of the shaft and the hoisting cable attached to the bail 16. The platform or cage when given an upward movement permits the lower platform to sink slightly below the upper platform, and locks the car as shown at Fig. 1 on the drawings. When the guide rollers reach the bent portion of the guide rolls the platform commences to tilt, and in so doing moves slightly forward bringing the apron 22 over the chute, and at the same time operating the lever to open the latch of the car. This lever 19 may be adjusted so as to operate the latch at any desired angle.

Having thus described my invention, I claim In a device of the class described, the combination,with a hoisting case and suitable end to engage a detent roller; and a detent roller rotatably fixed in position to engage and deflect the said lever when the car is in 15 an inclined position.

In testimony that I claim the foregoing I hereunto afflx my signature this 23d day of November, A. D. 1892.

NIOKLAUS I'IALLER. [n s.]

In presence of- M. E. HARRISON, J. A. HERRON. 

